Proton image and momentum distributions from light-front dynamics

Author(s)

Ydrefors, E. ^{[1, 2]} ; Frederico, T. ^[2]

Affiliation

^[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000 - Peoples R China

^[2] Inst Tecnol Aeronaut, DCTA, BR-12228900 Sao Jose Dos Campos - Brazil

• Document type: Journal article
• Source: Physical Review D; v. 104, n. 11 DEC 15 2021.
• Web of Science Citations: 0

Abstract

We apply a dynamical three-constituent quark light-front model to study the proton. The dynamics is based on the notion of a diquark (bound or virtual) as the dominant interaction channel, which parameterize a contact interaction between the quarks in order to build the three-body Faddeev Bethe-Salpeter equations for the valence state, and we focus on the totally symmetric part of the wave function. The Dirac electromagnetic form factor is used to fix the model parameters, and the valence wave function is obtained. From that we investigate its Ioffe-time image, nonpolarized longitudinal and transverse momentum distributions, and the double momentum distribution. (AU)

• FAPESP's process: 18/21758-2 - Relativistic few-body problems and antiproton reactions
• Grantee: Emanuel Arthur Ydrefors
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 16/25143-7 - Relativistic two and three-body problems in Minkowski space in (2+1) and (3+1) dimensions
• Grantee: Emanuel Arthur Ydrefors
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 17/05660-0 - Theoretical studies of the structure and reactions of exotic nuclei and many-body systems
• Grantee: Brett Vern Carlson
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 13/26258-4 - Superdense matter in the universe
• Grantee: Manuel Máximo Bastos Malheiro de Oliveira
• Support Opportunities: Research Projects - Thematic Grants